327 lines
9.2 KiB
C
327 lines
9.2 KiB
C
/*
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* arch/arm/mach-ep93xx/edb93xx.c
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* Cirrus Logic EDB93xx Development Board support.
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*
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* EDB93XX, EDB9301, EDB9307A
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* Copyright (C) 2008-2009 H Hartley Sweeten <hsweeten@visionengravers.com>
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*
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* EDB9302
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* Copyright (C) 2006 George Kashperko <george@chas.com.ua>
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*
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* EDB9302A, EDB9315, EDB9315A
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* Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
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*
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* EDB9307
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* Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org>
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*
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* EDB9312
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* Copyright (C) 2006 Infosys Technologies Limited
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* Toufeeq Hussain <toufeeq_hussain@infosys.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <linux/i2c.h>
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#include <linux/i2c-gpio.h>
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#include <linux/spi/spi.h>
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#include <sound/cs4271.h>
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#include <mach/hardware.h>
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#include <mach/fb.h>
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#include <mach/ep93xx_spi.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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static void __init edb93xx_register_flash(void)
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{
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if (machine_is_edb9307() || machine_is_edb9312() ||
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machine_is_edb9315()) {
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ep93xx_register_flash(4, EP93XX_CS6_PHYS_BASE, SZ_32M);
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} else {
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ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_16M);
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}
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}
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static struct ep93xx_eth_data __initdata edb93xx_eth_data = {
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.phy_id = 1,
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};
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/*************************************************************************
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* EDB93xx i2c peripheral handling
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*************************************************************************/
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static struct i2c_gpio_platform_data __initdata edb93xx_i2c_gpio_data = {
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.sda_pin = EP93XX_GPIO_LINE_EEDAT,
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.sda_is_open_drain = 0,
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.scl_pin = EP93XX_GPIO_LINE_EECLK,
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.scl_is_open_drain = 0,
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.udelay = 0, /* default to 100 kHz */
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.timeout = 0, /* default to 100 ms */
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};
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static struct i2c_board_info __initdata edb93xxa_i2c_board_info[] = {
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{
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I2C_BOARD_INFO("isl1208", 0x6f),
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},
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};
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static struct i2c_board_info __initdata edb93xx_i2c_board_info[] = {
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{
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I2C_BOARD_INFO("ds1337", 0x68),
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},
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};
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static void __init edb93xx_register_i2c(void)
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{
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if (machine_is_edb9302a() || machine_is_edb9307a() ||
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machine_is_edb9315a()) {
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ep93xx_register_i2c(&edb93xx_i2c_gpio_data,
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edb93xxa_i2c_board_info,
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ARRAY_SIZE(edb93xxa_i2c_board_info));
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} else if (machine_is_edb9307() || machine_is_edb9312() ||
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machine_is_edb9315()) {
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ep93xx_register_i2c(&edb93xx_i2c_gpio_data,
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edb93xx_i2c_board_info,
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ARRAY_SIZE(edb93xx_i2c_board_info));
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}
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}
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/*************************************************************************
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* EDB93xx SPI peripheral handling
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*************************************************************************/
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static struct cs4271_platform_data edb93xx_cs4271_data = {
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.gpio_nreset = -EINVAL, /* filled in later */
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};
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static int edb93xx_cs4271_hw_setup(struct spi_device *spi)
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{
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return gpio_request_one(EP93XX_GPIO_LINE_EGPIO6,
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GPIOF_OUT_INIT_HIGH, spi->modalias);
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}
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static void edb93xx_cs4271_hw_cleanup(struct spi_device *spi)
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{
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gpio_free(EP93XX_GPIO_LINE_EGPIO6);
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}
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static void edb93xx_cs4271_hw_cs_control(struct spi_device *spi, int value)
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{
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gpio_set_value(EP93XX_GPIO_LINE_EGPIO6, value);
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}
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static struct ep93xx_spi_chip_ops edb93xx_cs4271_hw = {
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.setup = edb93xx_cs4271_hw_setup,
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.cleanup = edb93xx_cs4271_hw_cleanup,
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.cs_control = edb93xx_cs4271_hw_cs_control,
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};
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static struct spi_board_info edb93xx_spi_board_info[] __initdata = {
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{
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.modalias = "cs4271",
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.platform_data = &edb93xx_cs4271_data,
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.controller_data = &edb93xx_cs4271_hw,
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.max_speed_hz = 6000000,
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.bus_num = 0,
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.chip_select = 0,
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.mode = SPI_MODE_3,
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},
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};
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static struct ep93xx_spi_info edb93xx_spi_info __initdata = {
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.num_chipselect = ARRAY_SIZE(edb93xx_spi_board_info),
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};
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static void __init edb93xx_register_spi(void)
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{
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if (machine_is_edb9301() || machine_is_edb9302())
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edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO1;
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else if (machine_is_edb9302a() || machine_is_edb9307a())
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edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_H(2);
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else if (machine_is_edb9315a())
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edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO14;
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ep93xx_register_spi(&edb93xx_spi_info, edb93xx_spi_board_info,
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ARRAY_SIZE(edb93xx_spi_board_info));
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}
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/*************************************************************************
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* EDB93xx I2S
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*************************************************************************/
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static int __init edb93xx_has_audio(void)
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{
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return (machine_is_edb9301() || machine_is_edb9302() ||
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machine_is_edb9302a() || machine_is_edb9307a() ||
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machine_is_edb9315a());
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}
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static void __init edb93xx_register_i2s(void)
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{
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if (edb93xx_has_audio()) {
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ep93xx_register_i2s();
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}
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}
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/*************************************************************************
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* EDB93xx pwm
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*************************************************************************/
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static void __init edb93xx_register_pwm(void)
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{
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if (machine_is_edb9301() ||
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machine_is_edb9302() || machine_is_edb9302a()) {
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/* EP9301 and EP9302 only have pwm.1 (EGPIO14) */
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ep93xx_register_pwm(0, 1);
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} else if (machine_is_edb9307() || machine_is_edb9307a()) {
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/* EP9307 only has pwm.0 (PWMOUT) */
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ep93xx_register_pwm(1, 0);
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} else {
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/* EP9312 and EP9315 have both */
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ep93xx_register_pwm(1, 1);
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}
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}
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/*************************************************************************
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* EDB93xx framebuffer
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*************************************************************************/
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static struct ep93xxfb_mach_info __initdata edb93xxfb_info = {
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.num_modes = EP93XXFB_USE_MODEDB,
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.bpp = 16,
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.flags = 0,
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};
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static int __init edb93xx_has_fb(void)
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{
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/* These platforms have an ep93xx with video capability */
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return machine_is_edb9307() || machine_is_edb9307a() ||
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machine_is_edb9312() || machine_is_edb9315() ||
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machine_is_edb9315a();
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}
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static void __init edb93xx_register_fb(void)
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{
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if (!edb93xx_has_fb())
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return;
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if (machine_is_edb9307a() || machine_is_edb9315a())
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edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN0;
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else
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edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN3;
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ep93xx_register_fb(&edb93xxfb_info);
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}
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static void __init edb93xx_init_machine(void)
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{
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ep93xx_init_devices();
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edb93xx_register_flash();
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ep93xx_register_eth(&edb93xx_eth_data, 1);
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edb93xx_register_i2c();
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edb93xx_register_spi();
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edb93xx_register_i2s();
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edb93xx_register_pwm();
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edb93xx_register_fb();
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}
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#ifdef CONFIG_MACH_EDB9301
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MACHINE_START(EDB9301, "Cirrus Logic EDB9301 Evaluation Board")
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/* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
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.boot_params = EP93XX_SDCE3_PHYS_BASE_SYNC + 0x100,
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.map_io = ep93xx_map_io,
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.init_irq = ep93xx_init_irq,
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.timer = &ep93xx_timer,
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.init_machine = edb93xx_init_machine,
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MACHINE_END
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#endif
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#ifdef CONFIG_MACH_EDB9302
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MACHINE_START(EDB9302, "Cirrus Logic EDB9302 Evaluation Board")
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/* Maintainer: George Kashperko <george@chas.com.ua> */
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.boot_params = EP93XX_SDCE3_PHYS_BASE_SYNC + 0x100,
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.map_io = ep93xx_map_io,
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.init_irq = ep93xx_init_irq,
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.timer = &ep93xx_timer,
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.init_machine = edb93xx_init_machine,
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MACHINE_END
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#endif
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#ifdef CONFIG_MACH_EDB9302A
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MACHINE_START(EDB9302A, "Cirrus Logic EDB9302A Evaluation Board")
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/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
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.boot_params = EP93XX_SDCE0_PHYS_BASE + 0x100,
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.map_io = ep93xx_map_io,
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.init_irq = ep93xx_init_irq,
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.timer = &ep93xx_timer,
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.init_machine = edb93xx_init_machine,
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MACHINE_END
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#endif
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#ifdef CONFIG_MACH_EDB9307
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MACHINE_START(EDB9307, "Cirrus Logic EDB9307 Evaluation Board")
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/* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
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.boot_params = EP93XX_SDCE3_PHYS_BASE_SYNC + 0x100,
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.map_io = ep93xx_map_io,
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.init_irq = ep93xx_init_irq,
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.timer = &ep93xx_timer,
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.init_machine = edb93xx_init_machine,
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MACHINE_END
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#endif
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#ifdef CONFIG_MACH_EDB9307A
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MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board")
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/* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
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.boot_params = EP93XX_SDCE0_PHYS_BASE + 0x100,
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.map_io = ep93xx_map_io,
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.init_irq = ep93xx_init_irq,
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.timer = &ep93xx_timer,
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.init_machine = edb93xx_init_machine,
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MACHINE_END
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#endif
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#ifdef CONFIG_MACH_EDB9312
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MACHINE_START(EDB9312, "Cirrus Logic EDB9312 Evaluation Board")
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/* Maintainer: Toufeeq Hussain <toufeeq_hussain@infosys.com> */
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.boot_params = EP93XX_SDCE3_PHYS_BASE_SYNC + 0x100,
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.map_io = ep93xx_map_io,
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.init_irq = ep93xx_init_irq,
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.timer = &ep93xx_timer,
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.init_machine = edb93xx_init_machine,
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MACHINE_END
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#endif
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#ifdef CONFIG_MACH_EDB9315
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MACHINE_START(EDB9315, "Cirrus Logic EDB9315 Evaluation Board")
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/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
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.boot_params = EP93XX_SDCE3_PHYS_BASE_SYNC + 0x100,
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.map_io = ep93xx_map_io,
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.init_irq = ep93xx_init_irq,
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.timer = &ep93xx_timer,
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.init_machine = edb93xx_init_machine,
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MACHINE_END
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#endif
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#ifdef CONFIG_MACH_EDB9315A
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MACHINE_START(EDB9315A, "Cirrus Logic EDB9315A Evaluation Board")
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/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
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.boot_params = EP93XX_SDCE0_PHYS_BASE + 0x100,
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.map_io = ep93xx_map_io,
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.init_irq = ep93xx_init_irq,
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.timer = &ep93xx_timer,
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.init_machine = edb93xx_init_machine,
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MACHINE_END
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#endif
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